/*
 * Copyright 2024 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package androidx.compose.ui.test

import android.os.Looper
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.ui.Modifier
import androidx.compose.ui.test.junit4.createComposeRule
import androidx.compose.ui.unit.dp
import kotlinx.coroutines.test.StandardTestDispatcher
import org.junit.Rule
import org.junit.Test
import org.junit.runner.RunWith
import org.robolectric.RobolectricTestRunner
import org.robolectric.Shadows.shadowOf
import org.robolectric.annotation.Config
import org.robolectric.annotation.GraphicsMode

@RunWith(RobolectricTestRunner::class)
@Config(sdk = [33])
@GraphicsMode(GraphicsMode.Mode.NATIVE)
class PrefetchNotHangingMainThreadTest {

    @get:Rule val composeRule = createComposeRule(StandardTestDispatcher())

    @Test
    fun prefetchNotHangingMainThread() {
        composeRule.setContent { LazyColumn { items(100) { Box(Modifier.size(30.dp)) } } }

        composeRule.onNode(hasScrollToIndexAction()).performTouchInput { swipeUp() }

        shadowOf(Looper.getMainLooper()).idle()
    }
}
